[Postfix-es] Mensaje raro enviando desde mi propia red

[Juan - Casa]

Buenas. Tengo implementado un pequenyo servidor de correo postfix+TLS.
En principio todo funciona bien, pero cuando quiero enviar un correo a
traves de el, desde una IP interna de la red (del tipo 192.168.1.X), me
dice este error:

postfix/smtpd[23896]: connect from elvira.homelinux.com[192.168.1.10]
postfix/smtpd[23896]: fatal: non-null host address bits in 
"192.168.1.0/16", perhaps you should use "192.168.0.0/16" instead
postfix/master[23854]: warning: process /usr/lib/postfix/smtpd 
pid 23896 exit status 1
postfix/master[23854]: warning: /usr/lib/postfix/smtpd: bad command 
startup -- throttling

Decir que en la salida de mi postconf -n, es la siguiente:

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
content_filter = smtp-amavis:[127.0.0.1]:10024
default_process_limit = 3
disable_vrfy_command = yes
header_checks = regexp:/etc/postfix/header_checks
mail_name = servidor de correo
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
maps_rbl_domains = relays.ordb.org,                   list.dsbl.org,
sbl.spamhaus.org
message_size_limit = 20480000
mydestination = Elvira.homelinux.com, localhost.localdomain, localhost
myhostname = Elvira.homelinux.com
mynetworks = 127.0.0.0/8, 192.168.1.0/16
myorigin = /etc/hostname
recipient_delimiter = +
relayhost =
sender_canonical_maps = hash:/etc/postfix/sender_canonical
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options =
smtp_starttls_timeout = 300s
smtp_tls_cert_file = /etc/ssl/postfix.pem
smtp_tls_key_file = $smtp_tls_cert_file
smtp_tls_loglevel = 2
smtp_tls_note_starttls_offer = yes
smtp_tls_session_cache_timeout = 3600s
smtp_use_tls = yes
smtpd_banner = ESMTP correo
smtpd_client_restrictions = permit_mynetworks,
check_client_access hash:/etc/postfix/client_access,
reject_rbl_client sbl.spamhaus.org,               reject_rbl_client
list.dsbl.org,
smtpd_error_sleep_time = 1s
smtpd_hard_error_limit = 10
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks,    reject_invalid_hostname,
smtpd_recipient_limit = 10
smtpd_sender_restrictions = reject_unknown_sender_domain
smtpd_soft_error_limit = 60
tls_random_source = dev:/dev/urandom
transport_maps = hash:/etc/postfix/transport

La version de postfix es la que viene en Debian Etch, esto es:

ii  postfix    2.3.8-2+b1

No se si se necesita algun dato mas, un saludo.
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